diff --git a/kcsc-back-end/build.gradle b/kcsc-back-end/build.gradle
index 8bf8c1d..f6fd3b4 100644
--- a/kcsc-back-end/build.gradle
+++ b/kcsc-back-end/build.gradle
@@ -68,8 +68,9 @@ dependencies {
 	// https://mvnrepository.com/artifact/io.springfox/springfox-boot-starter
 	implementation group: 'io.springfox', name: 'springfox-boot-starter', version: '3.0.0'
 
-	// https://mvnrepository.com/artifact/jakarta.validation/jakarta.validation-api
-	implementation group: 'jakarta.validation', name: 'jakarta.validation-api', version: '3.0.2'
+	// https://mvnrepository.com/artifact/javax.validation/validation-api
+	implementation group: 'javax.validation', name: 'validation-api', version: '2.0.1.Final'
+
 	// https://mvnrepository.com/artifact/io.jsonwebtoken/jjwt-api
 	implementation group: 'io.jsonwebtoken', name: 'jjwt-api', version: '0.11.5'
 	// https://mvnrepository.com/artifact/io.jsonwebtoken/jjwt-impl
diff --git a/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/config/common/LoginVO.java b/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/config/common/LoginVO.java
index c06dbac..6f84b1d 100644
--- a/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/config/common/LoginVO.java
+++ b/kcsc-back-end/src/main/java/com/dbnt/kcscbackend/config/common/LoginVO.java
@@ -1,10 +1,11 @@
 package com.dbnt.kcscbackend.config.common;
 
 import io.swagger.v3.oas.annotations.media.Schema;
-import jakarta.validation.constraints.Email;
+
 import lombok.Getter;
 import lombok.Setter;
 
+import javax.validation.constraints.Email;
 import java.io.Serializable;
 
 /**